Electrolytic dissociation (2) Student activity Play

Electroscope Student activity Play

Encoding numbers Student activity Play

Enlargement on the plane Animation Play

Enlargements in the coordinate system Student activity Play

Enlargements with negative scales Whiteboard exercise Play

Enlargements with negative scales Student activity Play

Enthalpy Whiteboard exercise Play

Enthalpy change does not depend on the reaction pathway Animation Play

Enthalpy of solution. Part 1 Student activity Play

Entropy and spontaneous changes Student activity Play

Entropy change in the surroundings Animation Play

Equal numbers Whiteboard exercise Play

Equal numbers – wrong steps in proof Whiteboard exercise Play

Equally accurate rounding Student activity Play

Even and odd number of negative signs Whiteboard exercise Play

Existence of  nth root of a given number Whiteboard exercise Play

Experimental proof for the existence of dipole–dipole forces Slideshow Play

Experimental proof for the existence of dipole–dipole forces Student activity Play

Explain and justify Class activity Play

Explain and justify Whiteboard presentation Play

Factors affecting the lattice enthalpy Animation Play

Factors of numbers Whiteboard exercise Play

Facts and assumptions – prime numbers Whiteboard exercise Play

Facts and assumptions – the sum of the numbers Whiteboard exercise Play